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Gas Transport Phenomena in Nanoporous Material

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Presentation on theme: "Gas Transport Phenomena in Nanoporous Material"— Presentation transcript:

1 Gas Transport Phenomena in Nanoporous Material
International HPC Summer School 2017 Gas Transport Phenomena in Nanoporous Material Xinpeng Zhao Department of Mechanical Engineering University of Colorado Boulder, Boulder, CO , USA June 27, 2017 ID: C-20

2 Heat transfer characteristics
Motivation Geometric characteristics Highly porous random network (90%~99%) Large internal surface area (400~1200 m2/g) Ultra-fine pore size (1~100nm) Heat transfer characteristics solid gas radiation total

3 Numerical Methods Direct Simulation Monte Carlo (DSMC)
Quantum scale Kinetic scale Hydrodynamic scale Particle method; Simulation molecules represent a large number of real molecules; Based on statistical mechanics; Be consistent with Boltzmann transport equation ; Diffusion Limited Cluster Aggregation (DLCA)

4 Thermal Transport Results and validation Fourier’s Law
Reduce the amount of grids; Ensure the probability of collisions with walls; Eliminate the Knudsen effects;

5 Mass Transport Darcy’s Law Validation

6 Thanks for your attention !
Further Work Study the phonon transport within the backbone within nanoporous material with the Monte Carlo method; Study gas-solid coupling heat transfer effect; Predict the effective thermal conductivity ; Thanks for your attention !


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